It is very difficult to pinpoint the location of a Tenebricosa meowl. They pad about the Keep completely silently and perch in high places whence they can watch Keep activities unnoticed. Tenebricosa meowls cannot be trusted around smaller creatures, as they are prone to attack. They do not meow, but instead they shriek as barn owls when they must make noise. Despite their inherent unfriendliness, they do enjoy warmth and sweets and will never turn down a warm lap or a sweet treat offered to them.

Unlike their diurnal, friendly Alba cousins, Tenebricosa meowls are distinctly darker in personality, making it very difficult to gain their trust or loyalty. Dark magi have particular affinities for Tenebricosa meowls; where other magi may be frightened by the glow of their red eyes in the night, dark magi see a friend and a like soul. Tenebricosa meowls are known to be able to increase the power and duration of illusion magics of others and, with training, can cast their own illusory spells. Despite their small size, these meowls still have a sharp beak and claws and will not hesitate to use them if they feel threatened.